code: def test_layout_attribute(self):
      plt.close("all")
      g = Graph.Ring(5)
      g["layout"] = Layout([(x, x) for x in range(g.vcount())])
      fig, ax = plt.subplots()
      plot(g, target=ax)
  
imports: import os
  import unittest
  from igraph import Graph, plot, VertexClustering, Layout
  from ...utils import overridden_configuration
label_desc: Use image node_id 5 for calling the GraphTestRunner obj's underlying member method code with example usage: obj.test_layout_attribute() without return types